<template>
  <div class="articles-container">
    <el-card>
      <!-- 筛选部分 -->
      <el-row class="articlesChoice">
        <el-col :span="18">
          <el-form :inline="true" :model="reqParams" class="demo-form-inline" label-width="80px">
            <el-form-item label="关键字" size="small">
              <el-input v-model="reqParams.keyword" />
            </el-form-item>
            <el-form-item label="状态">
              <el-select v-model="reqParams.state" placeholder="请选择" size="small">
                <el-option label="启用" :value="0" />
                <el-option label="禁用" :value="1" />
              </el-select>
            </el-form-item>
            <el-form-item style="text-align:right">
              <el-button size="small" @click.native="delKeyWords()">清除</el-button>
              <el-button type="primary" size="small" @click.native="search()">搜索</el-button>
            </el-form-item>
          </el-form>
        </el-col>
        <el-col :span="6" style="text-align:right">
          <el-button type="success" icon="el-icon-edit" size="small" @click="addArticle()">新增技巧</el-button>
        </el-col>
      </el-row>
      <!-- 数据条数 -->
      <el-alert
        :title="`数据一共 ${total}  条`"
        style="margin-bottom:15px"
        type="info"
        class="alert"
        :closable="false"
        show-icon
      />
      <!-- 表格 -->
      <el-table :data="tableArticlesList">
        <el-table-column type="index" label="序号" width="80px" :index="indexMethod" />
        <el-table-column label="文章标题" width="400px">
          <template #default="{row}">
            {{ row.title }}
            <a v-if="row.videoURL" href="#" @click.prevent="openVideo(row.videoURL)"><i class="el-icon-film" /></a>
          </template>
        </el-table-column>
        <el-table-column prop="visits" label="阅读数" />
        <el-table-column prop="username" label="录入人" />
        <el-table-column prop="createTime" label="录入时间">
          <template #default="{row}">
            {{ row.createTime|parseTimeByString }}
          </template>
        </el-table-column>
        <el-table-column prop="state" label="状态" width="180px">
          <template #default="{row}">
            {{ row.state===1?'已启用':'已禁用' }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template #default="{row}">
            <el-button type="text" @click="previewArticle(row)">预览</el-button>
            <el-button type="text" @click="stateToggle(row)">
              {{ row.state===1?'禁用':'启用' }}
            </el-button>
            <el-button type="text" :disabled="row.state===1" @click="editArticles(row)">修改</el-button>
            <el-button type="text" :disabled="row.state===1" @click="delArticle(row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination
        style="margin-top:20px;text-align:right"
        background
        :current-page="reqParams.page"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="reqParams.pagesize"
        layout="sizes, prev, pager, next, jumper"
        :total="total"
        hide-on-single-page
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />
      <!-- 视频 -->
      <div v-if="videoURL" class="videoPlay">
        <div class="close" @click="closeVideo()"><span class="el-icon-close" /></div>
        <div class="videobox"><video ref="videoRef" :src="videoURL" /></div>
      </div>
      <!-- 新增 -->
      <articles-add
        ref="addRef"
        :add-dialog-visible.sync="addDialogVisible"
        :edit-article="editArticle"
        @updateArticle="updateArticle"
      />
      <!-- 预览 -->
      <articles-preview :preview-dialog-visible.sync="previewDialogVisible" :preview="preview" />
    </el-card>
  </div>
</template>

<script>
import { list, remove, changeState } from '../../api/hmmm/articles'
import ArticlesAdd from '../components/articles-add.vue'
import ArticlesPreview from '../components/articles-preview.vue'
export default {
  components: { ArticlesAdd, ArticlesPreview },
  data() {
    return {
      // 表格数据
      tableArticlesList: [],
      // 请求的参数--表单数据
      reqParams: {
        page: 1,
        pagesize: 10,
        keyword: null,
        state: null
      },
      // 总条数
      total: 0,
      // 视频地址
      videoURL: null,
      // 控制新增对话框的布尔值
      addDialogVisible: false,
      editArticle: {}, // 当前点击的文章
      previewDialogVisible: false, // 预览对话框的布尔值
      preview: {}// 当前点击的预览文章
    }
  },
  created() {
    this.getArticleList()
  },
  methods: {
    // 获取文章列表
    async getArticleList() {
      const { data: { items, counts }} = await list(this.reqParams)
      // console.log(res)
      this.tableArticlesList = items
      this.total = counts
      // console.log(items)
    },
    // 分页条数发生改变的时候
    handleSizeChange(pageSize) {
      this.reqParams.page = 1
      this.reqParams.pagesize = pageSize
      this.getArticleList()
    },
    // 当前页数发生变化的时候
    handleCurrentChange(newPage) {
      this.reqParams.page = newPage
      this.getArticleList()
    },
    // 序号
    indexMethod(index) {
      return index + 1 + (this.reqParams.page - 1) * this.reqParams.pagesize
    },
    // 点击清除按钮清空关键字
    delKeyWords() {
      // console.log(111)
      this.reqParams = {
        page: 1,
        pagesize: 10,
        keywords: null,
        state: null
      }
    },
    // 筛选---搜索
    search() {
      this.reqParams.page = 1
      this.getArticleList()
    },
    // 点击视频按钮播放
    openVideo(url) {
      this.videoURL = url
      this.$nextTick(() => {
        this.$refs.videoRef.play()
      })
    },
    // 点击关闭按钮视频暂停
    closeVideo() {
      this.$refs.videoRef.pause()
      this.videoURL = null
    },
    // 删除文章列表
    async delArticle(data) {
      this.$confirm('此操作将永久删除该文章, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async() => {
        await remove(data)
        if (this.reqParams.length === 1 && this.reqParams.page > 1) {
          this.questionRandom.page--
        }
        this.$message.success('删除成功')
        // 重新获取
        this.getArticleList()
      }).catch(() => {
        this.$message.info('已取消删除')
      })
    },
    // 切换状态
    async stateToggle(data) {
      data.state = data.state === 1 ? 0 : 1
      await changeState({
        id: data.id,
        state: data.state
      })
      this.$message.success('操作成功')
      // console.log(res)
    },
    // 新增/修改文章的弹框
    addArticle() {
      this.addDialogVisible = true
      // console.log(id)
    },
    // 新增
    updateArticle() {
      this.getArticleList()
    },
    // 编辑
    editArticles(data) {
      this.addDialogVisible = true
      this.editArticle = data
      this.$refs.addRef.getArtiaclDetail(data.id)
      // console.log(id)
    },
    // 预览
    previewArticle(row) {
      this.previewDialogVisible = true
      this.preview = row
      // console.log(row)
    }
  }
}
</script>

<style scoped lang='scss'>
.articles-container{
  padding: 10px;
.el-icon-film{
  color:blue;
  font-size: 18px;
}
.videoPlay{
  position: fixed;
  top: 0;
  left: 0;
  width:100%;
  height: 100%;
  background-color: rgba(0,0,0,.3);
  overflow: hidden;
  z-index: 9999;
  .close{
    position: absolute;
    top:30px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(0,0,0,.4);
    line-height: 50px;
    text-align: center;
    font-size: 20px;
    color: #fff;
  }
  .videobox{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 800px;
    height: 600px;
    video{
      width: 100%;
      height: 100%;
    }
  }
}
}
</style>
